Logic Gate Simulator
Build and simulate digital logic circuits with AND, OR, NOT, XOR gates, LEDs, and clock signals.
About Logic Gate Simulator
Place gates on a canvas, wire them together, and watch voltage flow in real time. Logic Gate Simulator lets you build digital circuits from scratch using the fundamental components — AND, OR, NOT, XOR gates, LEDs, and clock signals — then toggle inputs and observe exactly what happens. It's hands-on in a way that textbook diagrams never quite are.
This is genuinely useful for students working through a computer architecture or electronics course, but it's just as approachable if you're simply curious how binary logic underlies every chip ever made. Start with a basic AND gate and a couple of input switches, or attempt a half-adder if you already know your way around a truth table. The open-source MIT-licensed codebase is available if you want to dig deeper. Browse more apps like this in education.
If numbers and graphs are more your thing, Graphing Calculator goes in a different direction but covers the same hands-on STEM territory. For Logic Gate Simulator itself, a larger screen is worth it — the wiring canvas gets crowded fast once you add more than a handful of gates, and tracing signal paths is much easier when each connection has room to read clearly.
How to use
Build and test digital logic circuits using drag-and-drop components and real-time simulation. **Basic Setup:** 1. Drag logic gates from left palette onto canvas 2. Connect components by dragging from output pins (circles) to input pins (squares) 3. Click "Simulate" to start real-time circuit evaluation **Mouse Controls:** - Left-click: Select components/wires - Ctrl+click: Multi-select items - Drag: Move selected components - Right-click+drag: Pan workspace - Mouse wheel: Zoom in/out - Double-click input pins: Toggle on/off states - Click+drag on empty space: Draw selection box **Keyboard Shortcuts:** - Delete: Remove selected items - Ctrl+A: Select all - Ctrl+C/V/X: Copy/paste/cut - Escape: Clear selection **Key Features:** - Components snap to grid automatically - Active wires highlight during simulation - Create reusable subcircuits with "New Circuit" - Save/load entire projects - Visual feedback with LEDs and wire highlighting **Goal:** Design functioning digital circuits by connecting logic gates and testing with interactive inputs and visual outputs.
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